[Bug 201497] [amdgpu]: '*ERROR* No EDID read' is back in 4.19

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201497

--- Comment #15 from Ivan Molodetskikh (yalterz at gmail.com) ---
I managed to force the kernel to use the EDID extracted via get-edid on kernel
4.18 thanks to https://bugzilla.kernel.org/show_bug.cgi?id=199799#c4 . The
trick was to add video=DP-4:e to the kernel parameters, so in my case the
complete addition looks like:

drm.edid_firmware=DP-4:edid/ASUS_VG248QE.bin video=DP-4:e

ASUS_VG248QE.bin was extracted with get-edid on kernel 4.18 and placed in
/usr/lib/firmware/edid/. With this in place, I can use my monitor fine on the
latest kernel (5.5.5).

Without this, I have the exact same issue on 5.5.5.

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